#box{
        text-align: center;
        width: 80%;
        margin: 0 auto;
    }
    #nav{
        font: 36px/2em 楷体;
        background: aliceblue;
    }
    #bread{
        border-bottom: 1px black datted;
        padding:3px;
        text-align: left;
    }
    h1{font:36px/2em 黑体;}
    h2{width:60%;border-bottom: 1px black solid;margin: 40px auto 20px;}
    a{text-decoration: none;}
    a:hover{
        text-decoration: underline;
        color: red;
    }
    .banner{width: 800px;height: 300px;}
    .lastline{margin-bottom: 2em;}
    .pics{
        width:200px;height: 400px;margin:8px;
    }
    .intro{
        font: 18px/1.5em 宋体;
        width: 60%;
        margin: 20px auto;
        text-align: left;
    }